Fans of the soap saw Bianca and Liam tie the knot earlier this year, but their marriage has come under strain since the revelation that the blonde is carrying Heath's baby.
Lisa Gormley, who plays Bianca, recently had a catch-up chat with Digital Spy about her current storylines.
What have Bianca's relationship troubles been like to film?
"It's been great to have the relationship dramas with the added drama of the pregnancy. It's added a bit more excitement and higher stakes. It's been good fun to film and a bit sad at the same time - a bit of both!"
Are you confident that Liam is the best match for Bianca?
"Yeah, I do believe that Bianca has made the best choice in marrying Liam. There's still chemistry with Heath, but that's what it's always been - chemistry. It hasn't been love, romance or security, it's always just been a pure chemical attraction.
"That spark is still there, and there's now the added fact that Heath is the father of Bianca's child. But Liam's definitely the best match for her, for mental health reasons alone!"
Would Bianca ever be unfaithful to Liam?
"No, it's happened to Bianca in the past as Vittorio cheated on her - and that absolutely destroyed her. There's no way she would do that to someone she loves."
Bianca doesn't want Heath to have anything to do with the baby. Can you understand her hesitation?
"As Lisa, I'd say, 'No, that's completely unfair and you can't do that!' But Bianca isn't thinking straight and she's petrified that she's going to lose the man she loves. She's pregnant and she did want the baby to be Liam's, but unfortunately the situation has turned out differently.
"Bianca is just fighting for her ideals, but sometimes you have to let go of those and accept the position that you're in. I think she's going to have to do some adjusting when it comes to her position.
"Bianca does start looking for things in Heath that you'd want to find in a father, because ultimately she knows that he's going to be involved. It's great for her to see him with Darcy - being so happy and a good father."
Here in the UK, we'll soon see Bianca and Liam consider leaving Summer Bay. What's going through their minds?
"Liam brings up the idea and initially Bianca says, 'We can't do that - it's not rational and it's not fair on the people around us'. But it comes to a point where she has no more options. She can't express in words to Liam that she wants to be with him and that she's not going to suddenly run off with Heath.
"Ultimately it's a final decision that she makes to convince Liam that she wants to be with him. She decides to do it to prove that she's serious and she doesn't want Heath."
Is she surprised when Heath takes legal action to prevent them from leaving?
"Absolutely - who'd have thought that he'd go so far? It is a shock and you'll have to see how that plays out. But it's a big decision for him."
Why do you think April has made life so difficult for Bianca recently?
"April always thinks she's doing the right thing, but sometimes she just needs to shut up! Ultimately and morally she is right in the things that she does, but she thinks in the moment and doesn't consider the consequences."
Home and Away's new series producer Lucy Addario has been in charge for a few months now. What's the atmosphere like with a new boss at the helm?
"It hasn't really changed. Lucy was working alongside [previous producer] Cam anyway, so she was well in tune with all of us here and we knew her well. But it's feeling good, new and exciting. These are the types of jobs that you do for a few years and then you move on to do other things. I think that's good as it keeps things fresh."
Where would you like Bianca to go next?
"I'd like to see some comedy from her, and I'd like to see her very dark side! There's still a long way to go with the character, which is very exciting for me."
> Home and Away couple heading for heartbreak
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Home and Away airs weekdays at 1.15pm and 6pm on Channel 5 in the UK and weekdays at 7pm on the Seven Network in Australia.